Replace your existing buttstock with this updated, collapsible, six-position design that includes secure storage for up to four, CR123, 3-volt batteries in the snap-latch side compartment. Plus, the storage lid is interchangeable for either right- or left-side carry with a convenient Picatinny rail unit that accepts the Command Arms Rail Mounted Magazine Pouch. Kit comes with all the hardware, including the receiver extension and recoil buffer/spring assembly, necessary to convert your AR-15/M16 rifle to accept this stock. Made from long lasting and durable fiber-filled plastic composite with rubber buttpad that features a negative angle for faster shouldering and increased comfort, especially when wearing body armor. Combat proven design includes an easy-to-operate release lever, lower sling swivel and dual position receptacles for push-button type sling swivels.